Linux Security
Linux Security
Linux Security

Debian: 'cfingerd' multiple vulnerabilities

Date 11 Jul 2001
Posted By LinuxSecurity Advisories
Buffer overflow and format string attack vulnerabilities exist in previous versions of cfingerd.

Debian Security Advisory DSA-066-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.                         Wichert Akkerman
July 11, 2001

Package        : cfingerd
Problem type   : remote exploit
Debian-specific: no

Steven van Acker reported on bugtraq that the version of cfingerd (a
configurable finger daemon) as distributed in Debian GNU/Linux 2.2
suffers from two problems:

1. The code that reads configuration files (files in which $ commands are
   expanded) copied its input to a buffer without checking for a buffer
   overflow. When the ALLOW_LINE_PARSING feature is enabled that code
   is used for reading users files as well, so local users could exploit

2. There also was a printf call in the same routine that did not protect
   against printf format attacks.

Since ALLOW_LINE_PARSING is enabled in the default /etc/cfingerd.conf
local users could use this to gain root access.

This has been fixed in version 1.4.1-1.2, and we recommend that you upgrade
your cfingerd package immediately.

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

Debian GNU/Linux 2.2 alias potato

  Potato was released for alpha, arm, i386, m68k, powerpc and sparc.

  Source archives:
      MD5 checksum: e1e5ed3fe85f2af5304b9f0d3d236a91
      MD5 checksum: 966e205737bcd43182d01114694ed52a
      MD5 checksum: 0461179bca7bb9b00fb23c0886666cb0

  Alpha architecture:
      MD5 checksum: 9c43dd39460c58ed6a0134333349e2f9

  ARM architecture:
      MD5 checksum: 70da6073d42fbbdd29a025517127ebb0

  Intel IA-32 architecture:
      MD5 checksum: 2281e1aa8dc439680b1df546a5139aae

  Motorola 680x0 architecture:
      MD5 checksum: 19bf9fbcf1d2e1d7d38ff5bd00c6dc0a

  PowerPC architecture:
      MD5 checksum: 383389307d0ebd11b3f8a20abe1395a9

  Sun Sparc architecture:
      MD5 checksum: 1e734a8573e1c05d8e07ffcc8543c4e9

  These packages will be moved into the stable distribution on its next

For not yet released architectures please refer to the appropriate
directory$arch/ .

apt-get: deb stable/updates main
dpkg-ftp: dists/stable/updates/main
Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.


LinuxSecurity Poll

How frequently do you patch/update your system?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum 0 answer(s) and maximum 3 answer(s).
[{"id":"179","title":"As soon as patches\/updates are released - I track advisories for my distro(s) diligently","votes":"50","type":"x","order":"1","pct":80.65,"resources":[]},{"id":"180","title":"Every so often, when I think of it","votes":"7","type":"x","order":"2","pct":11.29,"resources":[]},{"id":"181","title":"Hardly ever","votes":"5","type":"x","order":"3","pct":8.06,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350

Please vote first in order to view vote results.



bottom 200

Please enable / Bitte aktiviere JavaScript!
Veuillez activer / Por favor activa el Javascript![ ? ]

We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.